spielwiese
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Last change
on this file since 0a3fa3 was
0a3fa3,
checked in by Oleksandr Motsak <motsak@…>, 11 years ago
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bug in nlModP (longrat.cc:1294)
ADD: test mapping of -7/5 from Q into F_1000000007 (wrong on 32bit due to an integer overflow in nlModP)
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-
Property mode set to
100644
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File size:
312 bytes
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| 1 | LIB "tst.lib"; tst_init(); |
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| 2 | |
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| 3 | ring R = (0),(x,y,z),(ds(3),C); |
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| 4 | poly p = -7/5; |
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| 5 | |
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| 6 | ring @R = (1000000007),(x,y,z),(ds(3),C); |
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| 7 | |
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| 8 | (-7/5) == 200000000; |
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| 9 | |
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| 10 | number(400000003) * number(1000000000) == number(200000000); |
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| 11 | |
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| 12 | poly p = imap(R, p); |
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| 13 | |
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| 14 | p; // WRONG under 32 bit :( |
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| 15 | p == 200000000; |
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| 16 | p*5 + 7; // must be 0! |
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| 17 | |
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| 18 | |
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| 19 | |
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| 20 | tst_status(1);$ |
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